18 Anonymous In: Question-Answer Where can you find an underwater canyon deeper than the Grand Canyon? 18 Where can you find an underwater canyon deeper than the Grand Canyon? Ninety Mile Beach Discovery Bay Cape Cod Monterey Bay 1 Answer Voted Oldest Recent Random Best Answer Goto 2021-03-14T07:42:20+00:00Added an answer on March 14, 2021 at 7:42 am The correct answer is Monterey Bay. 16 Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.